Which soil pollutant alters soil pH and leaches heavy metals, damaging crops?
APesticides
BPlastic waste
CFly ash and slag
DFertilizers
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ഇനിപ്പറയുന്ന ഇക്കോസിസ്റ്റം തരങ്ങളിൽ ഏതാണ് ഏറ്റവും ഉയർന്ന വാർഷിക അറ്റ പ്രാഥമിക ഉൽപ്പാദനക്ഷമതയുള്ളത്?